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How to use extractRootCause method of build Package

Best Syzkaller code snippet using build.extractRootCause

linux.go

Source:linux.go

...59		return err60	}61	cmd.Dir = kernelDir62	if _, err := osutil.Run(time.Hour, cmd); err != nil {63		return extractRootCause(err)64	}65	vmlinux := filepath.Join(kernelDir, "vmlinux")66	outputVmlinux := filepath.Join(outputDir, "obj", "vmlinux")67	if err := os.Rename(vmlinux, outputVmlinux); err != nil {68		return fmt.Errorf("failed to rename vmlinux: %v", err)69	}70	return nil71}72func (linux) createImage(vmType, kernelDir, outputDir, userspaceDir, cmdlineFile, sysctlFile string) error {73	tempDir, err := ioutil.TempDir("", "syz-build")74	if err != nil {75		return err76	}77	defer os.RemoveAll(tempDir)78	scriptFile := filepath.Join(tempDir, "create.sh")79	if err := osutil.WriteExecFile(scriptFile, []byte(createImageScript)); err != nil {80		return fmt.Errorf("failed to write script file: %v", err)81	}82	bzImage := filepath.Join(kernelDir, filepath.FromSlash("arch/x86/boot/bzImage"))83	cmd := osutil.Command(scriptFile, userspaceDir, bzImage)84	cmd.Dir = tempDir85	cmd.Env = append([]string{}, os.Environ()...)86	cmd.Env = append(cmd.Env,87		"SYZ_VM_TYPE="+vmType,88		"SYZ_CMDLINE_FILE="+osutil.Abs(cmdlineFile),89		"SYZ_SYSCTL_FILE="+osutil.Abs(sysctlFile),90	)91	if _, err = osutil.Run(time.Hour, cmd); err != nil {92		return fmt.Errorf("image build failed: %v", err)93	}94	// Note: we use CopyFile instead of Rename because src and dst can be on different filesystems.95	imageFile := filepath.Join(outputDir, "image")96	if err := osutil.CopyFile(filepath.Join(tempDir, "disk.raw"), imageFile); err != nil {97		return err98	}99	keyFile := filepath.Join(outputDir, "key")100	if err := osutil.CopyFile(filepath.Join(tempDir, "key"), keyFile); err != nil {101		return err102	}103	if err := os.Chmod(keyFile, 0600); err != nil {104		return err105	}106	return nil107}108func (linux) clean(kernelDir string) error {109	cpu := strconv.Itoa(runtime.NumCPU())110	cmd := osutil.Command("make", "distclean", "-j", cpu)111	if err := osutil.Sandbox(cmd, true, true); err != nil {112		return err113	}114	cmd.Dir = kernelDir115	_, err := osutil.Run(10*time.Minute, cmd)116	return err117}118func extractRootCause(err error) error {119	verr, ok := err.(*osutil.VerboseError)120	if !ok {121		return err122	}123	var cause []byte124	for _, line := range bytes.Split(verr.Output, []byte{'\n'}) {125		for _, pattern := range buildFailureCauses {126			if pattern.weak && cause != nil {127				continue128			}129			if bytes.Contains(line, pattern.pattern) {130				cause = line131				break132			}...

build.go

Source:build.go

...37			return fmt.Errorf("failed to write config file: %v", err)38		}39	}40	err = builder.build(targetArch, vmType, kernelDir, outputDir, compiler, userspaceDir, cmdlineFile, sysctlFile, config)41	return extractRootCause(err)42}43func Clean(targetOS, targetArch, vmType, kernelDir string) error {44	builder, err := getBuilder(targetOS, targetArch, vmType)45	if err != nil {46		return err47	}48	return builder.clean(kernelDir, targetArch)49}50type KernelBuildError struct {51	*osutil.VerboseError52}53type builder interface {54	build(targetArch, vmType, kernelDir, outputDir, compiler, userspaceDir,55		cmdlineFile, sysctlFile string, config []byte) error56	clean(kernelDir, targetArch string) error57}58func getBuilder(targetOS, targetArch, vmType string) (builder, error) {59	var supported = []struct {60		OS   string61		arch string62		vms  []string63		b    builder64	}{65		{"linux", "amd64", []string{"gvisor"}, gvisor{}},66		{"linux", "amd64", []string{"gce", "qemu"}, linux{}},67		{"fuchsia", "amd64", []string{"qemu"}, fuchsia{}},68		{"fuchsia", "arm64", []string{"qemu"}, fuchsia{}},69		{"akaros", "amd64", []string{"qemu"}, akaros{}},70		{"openbsd", "amd64", []string{"gce", "vmm"}, openbsd{}},71		{"netbsd", "amd64", []string{"gce", "qemu"}, netbsd{}},72		{"freebsd", "amd64", []string{"gce", "qemu"}, freebsd{}},73	}74	for _, s := range supported {75		if targetOS == s.OS && targetArch == s.arch {76			for _, vm := range s.vms {77				if vmType == vm {78					return s.b, nil79				}80			}81		}82	}83	return nil, fmt.Errorf("unsupported image type %v/%v/%v", targetOS, targetArch, vmType)84}85func CompilerIdentity(compiler string) (string, error) {86	if compiler == "" {87		return "", nil88	}89	bazel := strings.HasSuffix(compiler, "bazel")90	arg := "--version"91	if bazel {92		arg = ""93	}94	output, err := osutil.RunCmd(time.Minute, "", compiler, arg)95	if err != nil {96		return "", err97	}98	for _, line := range strings.Split(string(output), "\n") {99		if bazel {100			// Strip extracting and log lines...101			if strings.Contains(line, "Extracting Bazel") {102				continue103			}104			if strings.HasPrefix(line, "INFO: ") {105				continue106			}107			if strings.HasPrefix(line, "WARNING: ") {108				continue109			}110		}111		return strings.TrimSpace(line), nil112	}113	return "", fmt.Errorf("no output from compiler --version")114}115func extractRootCause(err error) error {116	if err == nil {117		return nil118	}119	verr, ok := err.(*osutil.VerboseError)120	if !ok {121		return err122	}123	cause := extractCauseInner(verr.Output)124	if cause != nil {125		verr.Title = string(cause)126	}127	return KernelBuildError{verr}128}129func extractCauseInner(s []byte) []byte {...

extractRootCause

Using AI Code Generation

1import (2func main() {3	cwd, err := os.Getwd()4	if err != nil {5		log.Fatal(err)6	}7	root, err := build.Default.ImportDir(cwd, 0)8	if err != nil {9		log.Fatal(err)10	}11	fmt.Printf("root cause: %v12	root, err = build.Default.ImportDir(filepath.Join(cwd, "src"), 0)13	if err != nil {14		log.Fatal(err)15	}

extractRootCause

Using AI Code Generation

1import (2func main() {3    if len(os.Args) != 2 {4        log.Fatalf("Usage: %s <path to go source file>5    }6    build := newBuild(os.Args[1])7    build.parse()8    build.extractRootCause()9    fmt.Println(build.rootCause)10}11import (12func main() {13    if len(os.Args) != 2 {14        log.Fatalf("Usage: %s <path to go source file>15    }16    build := newBuild(os.Args[1])17    build.parse()18    build.extractRootCause()19    fmt.Println(build.rootCause)20}21import (22func main() {23    if len(os.Args) != 2 {24        log.Fatalf("Usage: %s <path to go source file>25    }26    build := newBuild(os.Args[1])27    build.parse()28    build.extractRootCause()29    fmt.Println(build.rootCause)30}31import (32func main() {33    if len(os.Args) != 2 {34        log.Fatalf("Usage: %s <path to go source file>35    }36    build := newBuild(os.Args[1])37    build.parse()38    build.extractRootCause()39    fmt.Println(build.rootCause)40}41import (42func main() {43    if len(os.Args) != 2 {44        log.Fatalf("Usage: %s <path to go source file>45    }46    build := newBuild(os.Args[1])47    build.parse()

extractRootCause

Using AI Code Generation

1import (2func main() {3    cl, err := buildlet.Dial("tcp", "localhost:9999")4    if err != nil {5        log.Fatal(err)6    }7    defer cl.Close()8    if err != nil {9        log.Fatal(err)10    }11    fmt.Println(rootCause)12}13import (14func main() {15    cl, err := buildlet.Dial("tcp", "localhost:9999")16    if err != nil {17        log.Fatal(err)18    }19    defer cl.Close()20    if err != nil {21        log.Fatal(err)22    }23    fmt.Println(rootCause)24}25import (26func main() {27    cl, err := buildlet.Dial("tcp", "localhost:9999")28    if err != nil {29        log.Fatal(err)30    }31    defer cl.Close()

extractRootCause

Using AI Code Generation

1import (2func main() {3    gopath := os.Getenv("GOPATH")4    path := filepath.Join(gopath, "src", "github.com", "packtpub", "Go-Programming-Cookbook-Second-Edition")5    err := build.ImportDir(path, 0)6    if err != nil {7        rootCause := buildutil.ExtractRootCause(err)8        fmt.Println(rootCause)9    }10}

extractRootCause

Using AI Code Generation

1import (2func main() {3	err := fmt.Errorf("This is a test error")4	rootCause := ctx.ExtractRootCause(err)5	fmt.Println(rootCause)6}

extractRootCause

Using AI Code Generation

1import (2func main() {3	_, err := bc.Import("go/build", "", build.FindOnly)4	rootCause := bc.ExtractRootCause(err)5	fmt.Println(rootCause)6}7        /usr/local/go/src/go/build (from $GOROOT)8        /home/username/go/src/go/build (from $GOPATH)

extractRootCause

Using AI Code Generation

1import (2func main() {3	build := &core.Build{4		ChangeSets: []*core.ChangeSet{5			{6				Items: []*core.ChangeSetItem{7					{8					},9				},10			},11		},12	}13	rootCause := build.ExtractRootCause()14	fmt.Println(rootCause)15}

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